The radioactive substance neptunium -139 decays to 72.85% of its original amount after 28 hours. How long (to the nearest hour) would it take for 37% of the original neptunium to be present?
?
__________ hours
Fill in the blank(s) with the appropriate word(s).
88
Mathematics
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Divide and, if possible, simplify.
A. 2
B. 5
C. 
D. 
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Provide an appropriate response.The product, power, and quotient rules enable us to simplify expressions like loga
. Explain why such expressions can always be simplified without using the quotient rule.
What will be an ideal response?
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Solve the inequality. Write the solution in interval notation and graph the solution set.-6x + 6 ? -7x - 1
A. [-7, ?)
B. (-?, -7)
C. (5, ?)
D. (-?, -7]
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Solve the problem.Find the volume of the rectangular solid with the following dimensions.Length = 9 inches, width = 7 inches, height = 6 inches
A. 63 B. 69 C. 378 D. 42
Mathematics